Use Android 15 APIs

[UweTrottmann]

Target Android 15

• Check for any breaking changes and fix them https://developer.android.com/about/versions/15/behavior-changes-15
• Target Android 15
• Post about optional safer intents support UweTrottmann/SeriesGuide-Extension-Example@89570a0
  • SeriesGuide currently does not require it, so leave at note in docs

Use new Android 15 APIs

• Update ThemeUtils#configureEdgeToEdge to not set status and navigation bar color (pending that Samsung devices will actually have a transparent nav bar)
• For widgets, use RemoteCollectionItems to pass the collection https://developer.android.com/develop/ui/views/appwidgets/collections#use-remote-collections
  • This effectively removes adapter support (incl. ListWidgetRemoteViewsFactory), requiring to pass all items when updating the widget. So depending on how many items are allowed (docs say not many) this effectively removes the "list" part of the widgets.
• ...